Steering Rack and Spool Valve
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Joined: Jul 2002
Posts: 3,269
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From: Deep in the Heart of Texas!
Steering Rack and Spool Valve
At long last, getting ready to take care of my old, leaky steering rack.
From '91 onward Porsche provided 'reduced effort' steering that I want to maintain. This has several parts: a higher pressure pump, different restrictors in the hoses and, I believe, a different spool valve in the steering rack. This rings true because I don't think any other component in the rack has much effect on steering effort. But, what I've read and heard is that no one knows - or can tell - if any given rack has the reduced effort spool valve or the pre-'91 type in it.
So my question is, can my original spool valve be removed and swapped into a generic rebuilt rack? If so, is this a complicated and delicate process or fairly simple?
So far, my theory has been to send my rack to a rebuilder who promises they'll rebuild and send back my unit. But, if the spool valve can be easily transferred to a generic rebuilt 'late' rack, then maybe that's another option to consider?
From '91 onward Porsche provided 'reduced effort' steering that I want to maintain. This has several parts: a higher pressure pump, different restrictors in the hoses and, I believe, a different spool valve in the steering rack. This rings true because I don't think any other component in the rack has much effect on steering effort. But, what I've read and heard is that no one knows - or can tell - if any given rack has the reduced effort spool valve or the pre-'91 type in it.
So my question is, can my original spool valve be removed and swapped into a generic rebuilt rack? If so, is this a complicated and delicate process or fairly simple?
So far, my theory has been to send my rack to a rebuilder who promises they'll rebuild and send back my unit. But, if the spool valve can be easily transferred to a generic rebuilt 'late' rack, then maybe that's another option to consider?
